LTC3775 Linear Technology, LTC3775 Datasheet - Page 9

• Manufacturer Part Number: LTC3775
• Description: High Frequency Synchronous Step-Down Voltage Mode DC/DC Controller
• Manufacturer: Linear Technology

www.DataSheet4U.com
BLOCK DIAGRAM
R
B
R2
R
R
A
R5
C
C1
SET
SS
V
IN
R3
R4
C2
C3
RUN/SHDN
FREQ
MODE/SYNC
SS
COMP
FB
0.74V
FB
50k
0.6V
SS
MODE/SYNC
–
+
I RUN
1μA
1μA
I
DETECT
SS
+
+
–
SHDN
EA
INTV
CHIP
SHUTDOWN
CC
EXT SYNC
MODE
INTV
FEEDFORWARD
OVERTEMP
1.22V
3.6V
CC
OSC
LINE
V
IN
–
+
–
+
0.66V
EN
UVLO
–
+
–
+
PWM
MAX
5.2V REG
REF
V
IN
V
IN
CTLIM
CBLIM
IREV
MODE
INTV
0.6V
ANTISHOOT-
LOGIC AND
THROUGH
+
–
+
–
+
–
INTV
SWITCH
CC
0.2 • V
C
CC
+
VCC
PGND
PGND
INTV
ILIMB
CC
100μA
10μA
INTV
V
CC
ILIMB
BOOST
SENSE
PGND
SGND
I
I
LIMB
LIMT
SW
BG
TG
R
R
INTV
LTC3775
ILIMT
ILIMB
CC
D
C
B
B
C
V
OUT
IN
Q
Q
R
T
B
SENSE
L
3775 BD
9
3775f
V
OUT